What works in my district is communications to individual coaches. I make sure I talk to and email all coaches . . . making sure they each feel part of the district and that the district sees them as important.
Another important district tournament decision has been to always have someone at our tournament in tab that is not part of our district. This neutral person helps everyone see that no one coach in our district is running the show but that a neutral person is pushing the buttons.
For the past 3 years our district has held a “team building” day early in the season. This includes morning workshops and an afternoon practice tournament for new competitors, coaches, and judges in the district. We have seen teams grow. This also helps contestants learn the tournament procedures before they actually go out to compete.